Twitter has been a favorite of mine since early May (prior to LinkedIn's buyout). These last two weeks, Twitter has had a very impressive run up on buyout rumors. However, those buy out rumors have faded and the stock has tanked over 30%.
The buying strength shown due to buyout rumors is too strong to ignore (+35%) and buyers will be back. I don't have a specific buy price, but I do believe it will receive a significant bounce in the medium term (within 2 months). Twitter is definitely not done.