美国主机HostMonster在国内有比较高的知名度，提供不限制空间、不限制流量和一个免费域名的虚拟主机方案，跟所有提供UNLIMITED不限制空间和流量的美国主机一样，UNLIMITED只是一种宣传方式，不要太当真，美国主机HostMonster对每个主机帐号还是有文件数限制的。
前一段时间，因为HostMonster主机上网站文件数量太多，有20多万个文件，收到了HostMonster的违反服务条款(Terms of Service Violation)的告知Email， Email中是有一段文字是这样的：
We have a Target Performance Goal (TPG) for all accounts to have a maximum of 50,000 files on the account. The TPG is not an explicit limitation and is subject to change, depending on the needs and resources demanded of the server.
At this time we ask you that you please streamline your files and store only files necessary for your website. If you need assistance with removing these files or to help troubleshoot the reason for this problem we will be happy to assist you in this process.
可以看出，HostMonster为了保证服务器的性能，对每个虚拟主机帐号的最大文件数量限制为50000个，这个数字不是一个明确的限制，也就是说如果没有影响服务器性能的话，也有可能会放宽这个文件数限制。
欲了解HostMonster详细信息，请访问HostMonster官方网站：HostMonster.com
laptop batteries says:
June 11th, 2009 at 12:47 pm
cheap-laptop-batteries.com 我的也收到了这样的邮件：
It has come to our attention that your site is using an excessive number of files stored on your BlueHost.Com account. This is causing performance problems on your website as well as for other customers that are on this server. It can cause our servers to crash and cause additional downtime.
Our reseach shows that server performance degrades when accounts have over 50,000 files. In order to ensure optimal performance for your account and the others in your shared hosting environment, we request that you reduce the number of files on your account to under 50,000 in 14 days.
Beishan says:
June 11th, 2009 at 4:19 pm
BlueHost 和 HostMonster 是一样的，BlueHost的最大文件数限制也是 50,000，最好还是减少文件数，否则帐号可能会被暂停。
fitseo says:
August 23rd, 2009 at 1:21 am
老美这招厉害！
bucher says:
December 28th, 2009 at 10:06 am
5万随便用用就超过了，这样还不如买国内的空间了
Beishan says:
December 28th, 2009 at 11:11 am
晕，5万限制也成了选择国内空间还是国外空间的理由啊？又不是所有的美国空间都有文件数的限制