Splash/Warning Pages at front of site

[JohnW-UK]

We are looking at working on a site that needs a warning for users visiting - This splash/warning page is the only just google sees this not performing well in search engine - The sites are Wordpress sites - Would we use script to force a full screen pop up? This would be needed on a visit but if the user leaves and returns to the site the warning would need to reappear.

Any ideas?

[MatthewBarby]

For SEO reasons I would strongly recommend that you don't show a splash page to visitors because this is going to cause crawling issues for the search engine bots. I would load a popup (like you mentioned) and then when the user accepts the warning it stores their response on a cookie.