I strictly do not use the "nofollow" attribute. I use an technique that does not pass PR to an external site, but it is not the best semantical linking option.

For example look at this link: http://www.seoworkers.com/locate/m/drupal
Now, I decided to replace this technique with microformats, which all SE began supporting them at a certain extent.

I am planning now to use the following:

For linking to relevant authority resources: rev="vote-for".

For linking to other resources: rev="vote-abstain".

For affiliate links: rev="vote-against".

I was using them last year and for a very long time, and I never experienced any problems.

Do you see any problems with this option?

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