[android-developers] How best to query web repeatedly.

I run GPS, and query a web based mysql every 50 meters of driving.
People tell me the app locks up and has lag, so I put each query in a
new thread. This seems to create a backlog of threads (at least in the
emulator).

URL url = new URL("http://www.website.org/marks.php");

HttpURLConnection urlConn = (HttpURLConnection) url
.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(
urlConn.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null)
response.append( inputLine );

1. Are dozens of threads wrong? Do I just use two and leave it at
that?
2. Should I keep connection open as I have heard others speak of?
3. Will I ultimately be forced to sqlite and the new headache of db
synchronization?

Anyone have any experience to offer?

Thanks in advance,
-cellurl

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