Hi guys,i just wanna knows that why the transaction fee for bitcoins is increasing everyday.Some days before i send bitcoin to a trader the fee was 0.0005btc but yesterday i repeat the
same transaction same amount then the fee was 0.0006 btc.
Please correct me if i am posted in wrong section.

Thats because this scam nears to its end soon.
The reason is pure mathematics: there are less and less BTC to be released via mining, therefore there will be nothing to pay the miners with.
2 possibilites:
a) scheme masters try to prolong the scheme, by increasing payments to miners with transaction fees. That wont help in long run, because finally BTC release will drop to ZERO and if they want to include all reward for mining into transaction fee, the service will be ridiculously expensive.
b) scheme has entered second phase, where scheme masters collect money for themselves and miners stay underpaid.