Comment Forum mining (Score 1) 555
I recently upgraded my PC of about 5 years. Realising that I hadn't kept completely in touch with advancements in PC technology, I went forum mining.
I knew I wanted to play Dragon Age: Origins and I wanted it to run great. Searching related forums for Dragon Age I found plenty of people who had helped other with issues. Quite a few of these people list their current system spec in their signature.
Once I had a basic idea that was within my budget I cross referenced this with a few searches through over-clocker forums. Again there where many people who assist each other and also quote their system specs.
I found this process to be a fairly quick way on buying an on-budget (well, I did go a little over but what the heck) system made up of compatible components that were up to the job of playing the games I want to play.