Currently, they have to sign up before they can get tracked. There are challenges to track non-structured recommendations from other platforms. If you have suggestions, we would love to hear about them!

We have a system in place for quantifying quotes at http://backrecord.com . On the system that is live, all data has been entered by hand. The task is difficult enough that I've found even educated people who know about finance screw up the data entry more than I would like. So we have a sophisticated verification system in place to try and deal with that. We have also experimented with NLP algorithms with some success. If the data extraction is tailored to a particular source, it is quite doable in some cases.

Maybe import all of the posts, tickers and dates, and then get the user to manually go through and tag each one as buy/sell/hold, and enter the target price.

It's not perfect, but it might reduce the friction as you solve the chicken and egg problem.