There's a lot of signs there for आप that some people just don't care about आप that much, या maybe आप have all the wrong set of your online friends. On this site, there are some ways for आप to tell if your फ्रेंड्स are really your फ्रेंड्स like they say.
#1 They never add आप back, not even after a whole साल या so, although they're on this site all the time. They just don't care about getting any new friend, that's all. Some people on this site never read their mail, others never add anyone back... It's not your fault, so don't take it so personal, okay?
#2 They're never around to comment...