Ghostery, the browser plugin that allows its users to "track the trackers," just released data on the tags, widgets and analytics on websites that are the worst in terms of slowing page loads to a crawl. Any webmaster worth his or her salt already knows that slow page loads adversely affect Google rank and pageviews, but not everyone seems to have gotten the memo.
Ghostery estimates that if you put all of the top 10 worst "lagtags" on a single website, it would add 22 seconds to its load time.
And while the worst offender on the list, "Avalanchers" appears to be a fairly spammy link-sharing network, number two on the list, Millenial Media, appears to be a reputable "mobile advertising network" with a long list of top-tier clients, including Warner Brothers, McDonald's, and Chrysler.
To read the full, original article click on this link: This Is Why Your Website Is Slow - Technology Review
