Back when he was elected in November, everyone was creaming their pants and cheering him for triumphing over the Republican party but now I see lots of people complaining about him on several websites. Why is this?
It is just the same people who opposed him in November.
He is actually very popular - his job approval is higher than the percentage who voted for him so he has actually won some over rather than lost support.
Most of them are Republicans who are still upset over the fact that Obama won. Some people are just going to complain about him until he is out of office.