Hello Mr. Dubey!
Yes, I too have seen it though I do not remember exactly where. But as my fellow member Mr. Snehasish has pointed out, this will be an advantage for BengalSpider and not a drawback. This will get the site more members and readers, and some of them may be vigorous contributors like you! Let us take your case for example. Where did you heard the name of BengalSpider first? In ISC, I hope. You are from Bihar and reside in Lucknow, so it is natural for you to join BiharSpider, but how come you have joined many other spider sites in addition like AndhraSpider, TamilSpider and so on? It is because, someone or other promoted these sites somewhere and you came to know about them. Similarly, promoting BengalSpider will get more members and traffic to this site. Let other sites think over if we spam for BengalSpider, we have nothing to lose!