Well, do you want to get included in these search engines? http://media.entireweb.com/images/pages/express_inclusion/ewpartners.png If not, I wouldn't worry about it. Those are not exactly major search engines they're talking about (the previous link was found at http://entireweb.com/express_inclusion/features/). Google and Bing both have ways to submit your site to them for free, if they haven't already picked up on it. Bing's index powers Yahoo these days, so by submitting to just those two you have over 92% of the US search market taken care of (per August Hitwise numbers at http://www.experian.com/blogs/hitwise/2012/08/10/searchenginesjuly2012/)

So, I'd save your money and time on that one.

Do keep in mind that it is against Google's guidelines to buy links for the purposes of passing page rank.

Hi Sanket,

Did you actually do this, or was it another user who posted on http://productforums.google.com/forum/#!msg/webmasters/mu2AD_wS69w/K1iY6_zYqIgJ with this answer? It's helpful if you let us know if you actually did this, and if not, where you found the information.

Dr. Pete has a good post about this warning at http://www.seomoz.org/blog/how-many-links-is-too-many that may help you out.

Thanks Roberto, you beat me to that answer. The one limitation with that is it's a max of 3000 URLs per crawl, but it is the best way to crawl you site outside of the regular cycle.

In GA, look at the ISPs of the visits to see if one dropped off. We had a monitoring service that was actually triggering javascript that tweaked our direct numbers at a company once. Another thing that would affect it is doing email marketing and doing a tracking code so that suddenly the people who were direct (clicking on the link from the email) are now showing up as email referrals.