Appendix 1: Effects on Hit Counters (and other things to keep in mind)
Hit counters will be affected by using Xenu. Every time you use Xenu to check the links on your pages your counter will record a hit for each page where Xenu checks links, so be aware that your hit counter totals will be increased.
Xenu's Link Sleuth also affects webservers since it sends a lot of requests very quickly. This adds to the load on the server and could ultimately affect performance for all users. If you have a large site with many links that need to be checked, please consider running your link checks at an off-peak time (early in the morning or on a weekend).