Are Your Hyperlinks Spiderable?

The search engine spider simulator can be of great help when trying to figure out if the hyperlinks lead to the right place. For instance, link exchange websites often put fake links to your site with _javascript (using mouse over events and stuff to make the link look genuine) but actually this is not a link that search engines will see and follow. Since the spider simulator would not display such links, you'll know that something with the link is wrong.

It is highly recommended to use the <noscript> tag, as opposed to _javascript based menus. The reason is that _javascript based menus are not spiderable and all the links in them will be ignored as page text. The solution to this problem is to put all menu item links in the <noscript> tag. The <noscript> tag can hold a lot but please avoid using it for link stuffing or any other kind of SEO manipulation.

If you happen to have tons of hyperlinks on your pages (although it is highly recommended to have less than 100 hyperlinks on a page), then you might have hard times checking if they are OK. For instance, if you have pages that display "403 Forbidden", "404 Page Not Found" or similar errors that prevent the spider from accessing the page, then it is certain that this page will not be indexed. It is necessary to mention that a spider simulator does not deal with 403 and 404 errors because it is checking where links lead to not if the target of the link is in place, so you need to use other tools for checking if the targets of hyperlinks are the intended ones.