SharePoint WebPart & ASP.Net Coding workarounds

As a SharePoint Developer there are couple of the changes in coding as compared to ASP.net application.
Few important note I would like add for my developer Friends

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For Output : http://akshaya-m.blogspot.com?k=akshaya

Asp .Net Code
Response.Redirect("http://akshaya-m.blogspot.com?k=akshaya");
SharePoint Webpart Code Needs:
HttpContext.Current.Response.Redirect("http://akshaya-m.blogspot.com?k=akshaya");

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Get akshaya from the browser URL (http://akshaya-m.blogspot.com?k=akshaya)

Asp .Net Code
Request.SubString["k"]
SharePoint Webpart Code Needs:
Context.Request["k"].ToString();