Often, “click here� is the best anchor text to use, especially when you’re trying to make a sale!

whant to know how google look link profile? ONLY one way: practice.

A company that put a keyword in it's companyname should neither be penalized, nor receive an advantage to companies that didn't. But if the link descriptions and keyword profiling/density used are not in relation to a website's content AND the keywords used are very popular, this increases the suspect of a non-natural link profile.

Let's also not forget that a link description is not only a way to optimize your website for search engines, but it is also a way a webmaster describes what is behind a link. So if there are 1000 websites that are linked by the text 'seo blog', the importance of this text is less relevant in comparison to 10 websites that are linked with description 'best apple pie recipe ever'.
I strongly believe it would be very useful to search engines if they could have a slight idea when a link description was just made up because someone wants to rank good for a certain keyword string, or because someone thought "hey, this describes exactly what is to be found out there".

Maybe there is not a direct connection, but I suspect that there is at least a bit of influence on a website's karma or authority for these keywords.

But it could also be nonsense what I'm saying :-)

I think that it would be too dangerous for a search engine to put much resources into monitoring something such as this because the results would be too unpredictable. Search engines don’t want to be known for accidentally penalising a site for just having their company name or acronym in their link text. Another thing to keep in mind is that the same string of letters (a word) can have different meanings in different countries. For example in Portuguese the word ‘sem’ translates to English as ‘without’ and hence would have a huge number of web pages that would be returned for that keyword. Despite being an acronym for Search Engine Marketing, the string ‘sem’ is very uncompetitive in the UK and US. Should an English language site be marginalised because their company name is an extremely competitive search in another language or context. It just bring up too many questions.

Like you said, it's a bit suspicious if you gain, say, 100 inlinks within a week with only three different linked texts. But Google will get more convinced of your evil plans when you're not only having just a few variations of link descriptions, but also when these descriptions contain keywords that are strongly popular.

Me spamming my links around the web by commenting on several blogs with the text "Sint Smeding" attached to it, won't be such a big deal because this string is pretty unique. But with all the knowledge Google has of the web, they can easily detect which keywords are the most competitive. If you are optimizing your inbound links with keywords like 'seo' or 'insurance', alarm bells might start ringing much earlier than when you are trying to get some more links for 'best recipe for apple pie'.

Like you say in your post and we discussed by IM, putting valuable keywords in your link texts is smart, but it would be stupid to over do it, like most things in SEO.
I strongly believe the best way to build your link popularity is to write good content, so the choice of the link text will be left over to the creativity of whoever decided they wanted to add a link to your site :-)

:P